If a tenant has remaining unpaid rent that accrued between March 1, 2020, and six months following the expiration of the eviction moratorium or the end of the public health emergency [April 30, 2023], whichever is greater, the landlord must offer the tenant a reasonable schedule for repayment of the unpaid rent that does not exceed monthly payments equal to one-third of the monthly rental charges during the period of accrued debt.